<template>
	<div class="popup-result">
		<p class="title">最近5次运行时间</p>
		<ul class="popup-result-scroll">
			<template v-if="isShow">
				<li v-for="item in resultList" :key="item">{{ item }}</li>
			</template>
			<li v-else>计算结果中...</li>
		</ul>
	</div>
</template>

<script setup>
const props = defineProps({
	ex: {
		type: String,
		default: ""
	}
});
const dayRule = ref("");
const dayRuleSup = ref("");
const dateArr = ref([]);
const resultList = ref([]);
const isShow = ref(false);
watch(
	() => props.ex,
	() => expressionChange()
);
// 表达式值变化时，开始去计算结果
function expressionChange() {
	// 计算开始-隐藏结果
	isShow.value = false;
	// 获取规则数组[0秒、1分、2时、3日、4月、5星期、6年]
	let ruleArr = props.ex.split(" ");
	// 用于记录进入循环的次数
	let nums = 0;
	// 用于暂时存符号时间规则结果的数组
	let resultArr = [];
	// 获取当前时间精确至[年、月、日、时、分、秒]
	let nTime = new Date();
	let nYear = nTime.getFullYear();
	let nMonth = nTime.getMonth() + 1;
	let nDay = nTime.getDate();
	let nHour = nTime.getHours();
	let nMin = nTime.getMinutes();
	let nSecond = nTime.getSeconds();
	// 根据规则获取到近100年可能年数组、月数组等等
	getSecondArr(ruleArr[0]);
	getMinArr(ruleArr[1]);
	getHourArr(ruleArr[2]);
	getDayArr(ruleArr[3]);
	getMonthArr(ruleArr[4]);
	getWeekArr(ruleArr[5]);
	getYearArr(ruleArr[6], nYear);
	// 将获取到的数组赋值-方便使用
	let sDate = dateArr.value[0];
	let mDate = dateArr.value[1];
	let hDate = dateArr.value[2];
	let DDate = dateArr.value[3];
	let MDate = dateArr.value[4];
	let YDate = dateArr.value[5];
	// 获取当前时间在数组中的索引
	let sIdx = getIndex(sDate, nSecond);
	let mIdx = getIndex(mDate, nMin);
	let hIdx = getIndex(hDate, nHour);
	let DIdx = getIndex(DDate, nDay);
	let MIdx = getIndex(MDate, nMonth);
	let YIdx = getIndex(YDate, nYear);
	// 重置月日时分秒的函数(后面用的比较多)
	const resetSecond = function () {
		sIdx = 0;
		nSecond = sDate[sIdx];
	};
	const resetMin = function () {
		mIdx = 0;
		nMin = mDate[mIdx];
		resetSecond();
	};
	const resetHour = function () {
		hIdx = 0;
		nHour = hDate[hIdx];
		resetMin();
	};
	const resetDay = function () {
		DIdx = 0;
		nDay = DDate[DIdx];
		resetHour();
	};
	const resetMonth = function () {
		MIdx = 0;
		nMonth = MDate[MIdx];
		resetDay();
	};
	// 如果当前年份不为数组中当前值
	if (nYear !== YDate[YIdx]) {
		resetMonth();
	}
	// 如果当前月份不为数组中当前值
	if (nMonth !== MDate[MIdx]) {
		resetDay();
	}
	// 如果当前“日”不为数组中当前值
	if (nDay !== DDate[DIdx]) {
		resetHour();
	}
	// 如果当前“时”不为数组中当前值
	if (nHour !== hDate[hIdx]) {
		resetMin();
	}
	// 如果当前“分”不为数组中当前值
	if (nMin !== mDate[mIdx]) {
		resetSecond();
	}
	// 循环年份数组
	goYear: for (let Yi = YIdx; Yi < YDate.length; Yi++) {
		let YY = YDate[Yi];
		// 如果到达最大值时
		if (nMonth > MDate[MDate.length - 1]) {
			resetMonth();
			continue;
		}
		// 循环月份数组
		goMonth: for (let Mi = MIdx; Mi < MDate.length; Mi++) {
			// 赋值、方便后面运算
			let MM = MDate[Mi];
			MM = MM < 10 ? "0" + MM : MM;
			// 如果到达最大值时
			if (nDay > DDate[DDate.length - 1]) {
				resetDay();
				if (Mi === MDate.length - 1) {
					resetMonth();
					continue goYear;
				}
				continue;
			}
			// 循环日期数组
			goDay: for (let Di = DIdx; Di < DDate.length; Di++) {
				// 赋值、方便后面运算
				let DD = DDate[Di];
				let thisDD = DD < 10 ? "0" + DD : DD;
				// 如果到达最大值时
				if (nHour > hDate[hDate.length - 1]) {
					resetHour();
					if (Di === DDate.length - 1) {
						resetDay();
						if (Mi === MDate.length - 1) {
							resetMonth();
							continue goYear;
						}
						continue goMonth;
					}
					continue;
				}
				// 判断日期的合法性，不合法的话也是跳出当前循环
				if (
					checkDate(YY + "-" + MM + "-" + thisDD + " 00:00:00") !== true &&
					dayRule.value !== "workDay" &&
					dayRule.value !== "lastWeek" &&
					dayRule.value !== "lastDay"
				) {
					resetDay();
					continue goMonth;
				}
				// 如果日期规则中有值时
				if (dayRule.value === "lastDay") {
					// 如果不是合法日期则需要将前将日期调到合法日期即月末最后一天
					if (checkDate(YY + "-" + MM + "-" + thisDD + " 00:00:00") !== true) {
						while (DD > 0 && checkDate(YY + "-" + MM + "-" + thisDD + " 00:00:00") !== true) {
							DD--;
							thisDD = DD < 10 ? "0" + DD : DD;
						}
					}
				} else if (dayRule.value === "workDay") {
					// 校验并调整如果是2月30号这种日期传进来时需调整至正常月底
					if (checkDate(YY + "-" + MM + "-" + thisDD + " 00:00:00") !== true) {
						while (DD > 0 && checkDate(YY + "-" + MM + "-" + thisDD + " 00:00:00") !== true) {
							DD--;
							thisDD = DD < 10 ? "0" + DD : DD;
						}
					}
					// 获取达到条件的日期是星期X
					let thisWeek = formatDate(new Date(YY + "-" + MM + "-" + thisDD + " 00:00:00"), "week");
					// 当星期日时
					if (thisWeek === 1) {
						// 先找下一个日，并判断是否为月底
						DD++;
						thisDD = DD < 10 ? "0" + DD : DD;
						// 判断下一日已经不是合法日期
						if (checkDate(YY + "-" + MM + "-" + thisDD + " 00:00:00") !== true) {
							DD -= 3;
						}
					} else if (thisWeek === 7) {
						// 当星期6时只需判断不是1号就可进行操作
						if (dayRuleSup.value !== 1) {
							DD--;
						} else {
							DD += 2;
						}
					}
				} else if (dayRule.value === "weekDay") {
					// 如果指定了是星期几
					// 获取当前日期是属于星期几
					let thisWeek = formatDate(new Date(YY + "-" + MM + "-" + DD + " 00:00:00"), "week");
					// 校验当前星期是否在星期池（dayRuleSup）中
					if (dayRuleSup.value.indexOf(thisWeek) < 0) {
						// 如果到达最大值时
						if (Di === DDate.length - 1) {
							resetDay();
							if (Mi === MDate.length - 1) {
								resetMonth();
								continue goYear;
							}
							continue goMonth;
						}
						continue;
					}
				} else if (dayRule.value === "assWeek") {
					// 如果指定了是第几周的星期几
					// 获取每月1号是属于星期几
					let thisWeek = formatDate(new Date(YY + "-" + MM + "-" + DD + " 00:00:00"), "week");
					if (dayRuleSup.value[1] >= thisWeek) {
						DD = (dayRuleSup.value[0] - 1) * 7 + dayRuleSup.value[1] - thisWeek + 1;
					} else {
						DD = dayRuleSup.value[0] * 7 + dayRuleSup.value[1] - thisWeek + 1;
					}
				} else if (dayRule.value === "lastWeek") {
					// 如果指定了每月最后一个星期几
					// 校验并调整如果是2月30号这种日期传进来时需调整至正常月底
					if (checkDate(YY + "-" + MM + "-" + thisDD + " 00:00:00") !== true) {
						while (DD > 0 && checkDate(YY + "-" + MM + "-" + thisDD + " 00:00:00") !== true) {
							DD--;
							thisDD = DD < 10 ? "0" + DD : DD;
						}
					}
					// 获取月末最后一天是星期几
					let thisWeek = formatDate(new Date(YY + "-" + MM + "-" + thisDD + " 00:00:00"), "week");
					// 找到要求中最近的那个星期几
					if (dayRuleSup.value < thisWeek) {
						DD -= thisWeek - dayRuleSup.value;
					} else if (dayRuleSup.value > thisWeek) {
						DD -= 7 - (dayRuleSup.value - thisWeek);
					}
				}
				// 判断时间值是否小于10置换成“05”这种格式
				DD = DD < 10 ? "0" + DD : DD;
				// 循环“时”数组
				goHour: for (let hi = hIdx; hi < hDate.length; hi++) {
					let hh = hDate[hi] < 10 ? "0" + hDate[hi] : hDate[hi];
					// 如果到达最大值时
					if (nMin > mDate[mDate.length - 1]) {
						resetMin();
						if (hi === hDate.length - 1) {
							resetHour();
							if (Di === DDate.length - 1) {
								resetDay();
								if (Mi === MDate.length - 1) {
									resetMonth();
									continue goYear;
								}
								continue goMonth;
							}
							continue goDay;
						}
						continue;
					}
					// 循环"分"数组
					goMin: for (let mi = mIdx; mi < mDate.length; mi++) {
						let mm = mDate[mi] < 10 ? "0" + mDate[mi] : mDate[mi];
						// 如果到达最大值时
						if (nSecond > sDate[sDate.length - 1]) {
							resetSecond();
							if (mi === mDate.length - 1) {
								resetMin();
								if (hi === hDate.length - 1) {
									resetHour();
									if (Di === DDate.length - 1) {
										resetDay();
										if (Mi === MDate.length - 1) {
											resetMonth();
											continue goYear;
										}
										continue goMonth;
									}
									continue goDay;
								}
								continue goHour;
							}
							continue;
						}
						// 循环"秒"数组
						goSecond: for (let si = sIdx; si <= sDate.length - 1; si++) {
							let ss = sDate[si] < 10 ? "0" + sDate[si] : sDate[si];
							// 添加当前时间（时间合法性在日期循环时已经判断）
							if (MM !== "00" && DD !== "00") {
								resultArr.push(YY + "-" + MM + "-" + DD + " " + hh + ":" + mm + ":" + ss);
								nums++;
							}
							// 如果条数满了就退出循环
							if (nums === 5) break goYear;
							// 如果到达最大值时
							if (si === sDate.length - 1) {
								resetSecond();
								if (mi === mDate.length - 1) {
									resetMin();
									if (hi === hDate.length - 1) {
										resetHour();
										if (Di === DDate.length - 1) {
											resetDay();
											if (Mi === MDate.length - 1) {
												resetMonth();
												continue goYear;
											}
											continue goMonth;
										}
										continue goDay;
									}
									continue goHour;
								}
								continue goMin;
							}
						} //goSecond
					} //goMin
				} //goHour
			} //goDay
		} //goMonth
	}
	// 判断100年内的结果条数
	if (resultArr.length === 0) {
		resultList.value = ["没有达到条件的结果！"];
	} else {
		resultList.value = resultArr;
		if (resultArr.length !== 5) {
			resultList.value.push("最近100年内只有上面" + resultArr.length + "条结果！");
		}
	}
	// 计算完成-显示结果
	isShow.value = true;
}
// 用于计算某位数字在数组中的索引
function getIndex(arr, value) {
	if (value <= arr[0] || value > arr[arr.length - 1]) {
		return 0;
	} else {
		for (let i = 0; i < arr.length - 1; i++) {
			if (value > arr[i] && value <= arr[i + 1]) {
				return i + 1;
			}
		}
	}
}
// 获取"年"数组
function getYearArr(rule, year) {
	dateArr.value[5] = getOrderArr(year, year + 100);
	if (rule !== undefined) {
		if (rule.indexOf("-") >= 0) {
			dateArr.value[5] = getCycleArr(rule, year + 100, false);
		} else if (rule.indexOf("/") >= 0) {
			dateArr.value[5] = getAverageArr(rule, year + 100);
		} else if (rule !== "*") {
			dateArr.value[5] = getAssignArr(rule);
		}
	}
}
// 获取"月"数组
function getMonthArr(rule) {
	dateArr.value[4] = getOrderArr(1, 12);
	if (rule.indexOf("-") >= 0) {
		dateArr.value[4] = getCycleArr(rule, 12, false);
	} else if (rule.indexOf("/") >= 0) {
		dateArr.value[4] = getAverageArr(rule, 12);
	} else if (rule !== "*") {
		dateArr.value[4] = getAssignArr(rule);
	}
}
// 获取"日"数组-主要为日期规则
function getWeekArr(rule) {
	// 只有当日期规则的两个值均为“”时则表达日期是有选项的
	if (dayRule.value === "" && dayRuleSup.value === "") {
		if (rule.indexOf("-") >= 0) {
			dayRule.value = "weekDay";
			dayRuleSup.value = getCycleArr(rule, 7, false);
		} else if (rule.indexOf("#") >= 0) {
			dayRule.value = "assWeek";
			let matchRule = rule.match(/[0-9]{1}/g);
			dayRuleSup.value = [Number(matchRule[1]), Number(matchRule[0])];
			dateArr.value[3] = [1];
			if (dayRuleSup.value[1] === 7) {
				dayRuleSup.value[1] = 0;
			}
		} else if (rule.indexOf("L") >= 0) {
			dayRule.value = "lastWeek";
			dayRuleSup.value = Number(rule.match(/[0-9]{1,2}/g)[0]);
			dateArr.value[3] = [31];
			if (dayRuleSup.value === 7) {
				dayRuleSup.value = 0;
			}
		} else if (rule !== "*" && rule !== "?") {
			dayRule.value = "weekDay";
			dayRuleSup.value = getAssignArr(rule);
		}
	}
}
// 获取"日"数组-少量为日期规则
function getDayArr(rule) {
	dateArr.value[3] = getOrderArr(1, 31);
	dayRule.value = "";
	dayRuleSup.value = "";
	if (rule.indexOf("-") >= 0) {
		dateArr.value[3] = getCycleArr(rule, 31, false);
		dayRuleSup.value = "null";
	} else if (rule.indexOf("/") >= 0) {
		dateArr.value[3] = getAverageArr(rule, 31);
		dayRuleSup.value = "null";
	} else if (rule.indexOf("W") >= 0) {
		dayRule.value = "workDay";
		dayRuleSup.value = Number(rule.match(/[0-9]{1,2}/g)[0]);
		dateArr.value[3] = [dayRuleSup.value];
	} else if (rule.indexOf("L") >= 0) {
		dayRule.value = "lastDay";
		dayRuleSup.value = "null";
		dateArr.value[3] = [31];
	} else if (rule !== "*" && rule !== "?") {
		dateArr.value[3] = getAssignArr(rule);
		dayRuleSup.value = "null";
	} else if (rule === "*") {
		dayRuleSup.value = "null";
	}
}
// 获取"时"数组
function getHourArr(rule) {
	dateArr.value[2] = getOrderArr(0, 23);
	if (rule.indexOf("-") >= 0) {
		dateArr.value[2] = getCycleArr(rule, 24, true);
	} else if (rule.indexOf("/") >= 0) {
		dateArr.value[2] = getAverageArr(rule, 23);
	} else if (rule !== "*") {
		dateArr.value[2] = getAssignArr(rule);
	}
}
// 获取"分"数组
function getMinArr(rule) {
	dateArr.value[1] = getOrderArr(0, 59);
	if (rule.indexOf("-") >= 0) {
		dateArr.value[1] = getCycleArr(rule, 60, true);
	} else if (rule.indexOf("/") >= 0) {
		dateArr.value[1] = getAverageArr(rule, 59);
	} else if (rule !== "*") {
		dateArr.value[1] = getAssignArr(rule);
	}
}
// 获取"秒"数组
function getSecondArr(rule) {
	dateArr.value[0] = getOrderArr(0, 59);
	if (rule.indexOf("-") >= 0) {
		dateArr.value[0] = getCycleArr(rule, 60, true);
	} else if (rule.indexOf("/") >= 0) {
		dateArr.value[0] = getAverageArr(rule, 59);
	} else if (rule !== "*") {
		dateArr.value[0] = getAssignArr(rule);
	}
}
// 根据传进来的min-max返回一个顺序的数组
function getOrderArr(min, max) {
	let arr = [];
	for (let i = min; i <= max; i++) {
		arr.push(i);
	}
	return arr;
}
// 根据规则中指定的零散值返回一个数组
function getAssignArr(rule) {
	let arr = [];
	let assiginArr = rule.split(",");
	for (let i = 0; i < assiginArr.length; i++) {
		arr[i] = Number(assiginArr[i]);
	}
	arr.sort(compare);
	return arr;
}
// 根据一定算术规则计算返回一个数组
function getAverageArr(rule, limit) {
	let arr = [];
	let agArr = rule.split("/");
	let min = Number(agArr[0]);
	let step = Number(agArr[1]);
	while (min <= limit) {
		arr.push(min);
		min += step;
	}
	return arr;
}
// 根据规则返回一个具有周期性的数组
function getCycleArr(rule, limit, status) {
	// status--表示是否从0开始（则从1开始）
	let arr = [];
	let cycleArr = rule.split("-");
	let min = Number(cycleArr[0]);
	let max = Number(cycleArr[1]);
	if (min > max) {
		max += limit;
	}
	for (let i = min; i <= max; i++) {
		let add = 0;
		if (status === false && i % limit === 0) {
			add = limit;
		}
		arr.push(Math.round((i % limit) + add));
	}
	arr.sort(compare);
	return arr;
}
// 比较数字大小（用于Array.sort）
function compare(value1, value2) {
	if (value2 - value1 > 0) {
		return -1;
	} else {
		return 1;
	}
}
// 格式化日期格式如：2017-9-19 18:04:33
function formatDate(value, type) {
	// 计算日期相关值
	let time = typeof value == "number" ? new Date(value) : value;
	let Y = time.getFullYear();
	let M = time.getMonth() + 1;
	let D = time.getDate();
	let h = time.getHours();
	let m = time.getMinutes();
	let s = time.getSeconds();
	let week = time.getDay();
	// 如果传递了type的话
	if (type === undefined) {
		return (
			Y +
			"-" +
			(M < 10 ? "0" + M : M) +
			"-" +
			(D < 10 ? "0" + D : D) +
			" " +
			(h < 10 ? "0" + h : h) +
			":" +
			(m < 10 ? "0" + m : m) +
			":" +
			(s < 10 ? "0" + s : s)
		);
	} else if (type === "week") {
		// 在quartz中 1为星期日
		return week + 1;
	}
}
// 检查日期是否存在
function checkDate(value) {
	let time = new Date(value);
	let format = formatDate(time);
	return value === format;
}
onMounted(() => {
	expressionChange();
});
</script>
